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simplify glyph segment writing code

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This commit is contained in:
Andreas Gal 2011-06-20 04:16:41 -04:00
parent 5f75130fbf
commit e97f74f6e3
1 changed files with 8 additions and 10 deletions
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18
fonts.js
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@ -368,23 +368,21 @@ var Font = (function () {
var bias = 0; var bias = 0;
for (var i = 0; i < segCount - 1; i++) { for (var i = 0; i < segCount - 1; i++) {
var range = ranges[i]; var range = ranges[i];
var start = FontsUtils.integerToBytes(range[0], 2); var start = range[0];
var end = FontsUtils.integerToBytes(range[1], 2); var end = range[1];
var delta = (((start - 1) - bias) ^ 0xffff) + 1;
bias += (end - start + 1);
var delta = FontsUtils.integerToBytes(((range[0] - 1) - bias) % 65536, 2); var start = FontsUtils.integerToBytes(start, 2);
bias += (range[1] - range[0] + 1); var end = FontsUtils.integerToBytes(end, 2);
var delta = FontsUtils.integerToBytes(delta, 2);
// deltas are signed shorts
delta[0] ^= 0xFF;
delta[1] ^= 0xFF;
delta[1] += 1;
startCount.push(start[0], start[1]); startCount.push(start[0], start[1]);
endCount.push(end[0], end[1]); endCount.push(end[0], end[1]);
idDeltas.push(delta[0], delta[1]); idDeltas.push(delta[0], delta[1]);
idRangeOffsets.push(0x00, 0x00); idRangeOffsets.push(0x00, 0x00);
for (var j = range[0]; j <= range[1]; j++) for (var j = start; j <= end; j++)
glyphsIdsArray.push(j); glyphsIdsArray.push(j);
} }
startCount.push(0xFF, 0xFF); startCount.push(0xFF, 0xFF);